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个人中心收藏查看我的收藏0有用+10播报讨论上传视频滚动轴承钢轴承钢全名叫滚动轴承钢，具有高的抗压强度与疲劳极限，高硬度，高耐磨性及一定韧性，淬透性好，对硫和磷控制极严，是一种高级优质钢，可做冷作模具钢。比重：7.81。外文名
标    准YB 9-1968
硬度HRC58~~64

目录
1产品介绍2锻造工艺▪轴承钢锻造温度▪锻后热处理▪淬火及淬火介质▪回火温度3特性4参考对应牌号5化学成分6力学性能7热处理规范▪临界点温度▪普通球化退火▪等温球化退火▪重复球化退火▪淬、回火处理8典型应用举例
产品介绍
播报编辑轴承钢耐磨性和淬透性比GCr15更高，冷加工塑性变形中等，焊接性差，对白点形成敏感，热处理时有回火脆性。 用于制造壁厚＞12mm.外径≥250mm的套圈；直径50.8-203.2的钢球，直径＞22mm的滚子；此外也可作要求高硬度高耐磨性的其他机械零件，如轧辊.螺旋量规等钢是高碳、高铬轴承用钢,比GCr15钢有更高的耐磨性和淬透性.在油中的临界淬火直径为90~110mm (体积分数为50%马氏体),经840°C油冷淬火后,350°C回火状态,再进行光淬火,表面硬度高达1096HV,淬硬层深度可达1mm。针对成形滚轮热处理工艺的不足,采用薄边处预冷降温发生非马氏体转变,产生托氏体或索氏体，增强韧性、减小应力、再整体淬火达到工艺要求。进行冰冷处理,可提高轴承的尺寸稳定性,或进行马氏体分级淬火,以稳定残留奥氏体,获得高的尺寸稳定性和较高的韧性。该钢一般不建议进行锻造。一般淬火和低温回火后使用。 [1]标号/牌号：中国GB/JB标号: 德国DIN钢号标号: 100CrMn6德国DIN材料标号: 1．3520
锻造工艺
播报编辑轴承钢锻造温度(1)始锻温度：1150(1120)终缎温度：850(800)度。(2)锻造前清除表面缺陷，尽量预热后在快速加热。(3)温加工时，应避免200~400度的蓝脆区。热加工时，应避免进入高温脆区(大于1250)。应尽量避免进入热脆区(800~~950度)。锻后热处理(1)锻后————预先热处理(球化退火)————最终热处理(淬火+低温回火)(2)球化退火目的：降低硬度，便于加工，为淬火做准备。球化退火过程：加热到750~~770度，保温一定时间，在缓慢冷却到600度以下空冷。(3)各种轴承钢淬火+低温回火及硬度表钢号 淬火温度及淬火介质 低温回火 硬度HRC 800~840 油 150~170 62~64淬火及淬火介质(1)淬火颜色(经验) 白色最硬而脆，黄色硬而韧，兰色软而韧。(2) 淬火介质A 水：一般温度不超过40度，不得有油，肥皂等杂质。B 盐及碱的水溶液：水中加百分之5~10的盐或碱。盐溶液冷却速度是水的十倍，硬度高而均匀，但组织应力大，有一定的锈蚀作用。温度小于60度。碱溶液(苛性纳水溶液)腐蚀性大，适应范围小。C 油：包括机油，锭子油，变压器油，柴油等。可减小变形与开裂。不适用碳钢。油温度：在60~~80度，最高不超过100~120度。回火温度轴承钢采用低温回火。温度：150~250度。可在保持高硬度和高耐磨性的前提下，降低内应力和脆性，以免使用时崩裂或过早损坏。
特性
播报编辑●特性及适用范围：是在 GCr15钢基础上，适当提高Si、Mn含量以改善其淬透性和弹性极限，耐磨性也比 GCr15好。制造滚动体的适用尺寸范围比 GCr15大，主要用于制造壁厚＞12mm，外径＞280mm 的轴承套圈钢球直径＞50mm；圆锥、圆柱和球面滚子直径＞22mm和所有尺寸的滚针。
参考对应牌号
播报编辑中国GB/YB标准牌号、德国DIN标准牌号100CrMn6、德国DIN标准材料编号1. 3520、俄罗斯ΓOCT标准牌号ⅢX15CΓ。 [2]
化学成分
播报编辑碳 C ：0.95～1.05硅 Si：0.40～0.65锰 Mn：0.90～1.20硫 S ：≤0.020磷 P ：≤0.027铬 Cr：1.30～1.65镍 Ni：≤0.30铜 Cu：≤0.25
力学性能
播报编辑抗拉强度 σb (MPa)：1831冲击功 Akv (J)：23硬度 ：65HRC试样尺寸：某试样●热处理规范及金相组织：热处理规范：830～840℃淬火，油冷;160℃回火3h。金相组织：回火马氏体。gcr15simn表示方法① 钢号开头的两位数字表示钢的碳含量，以平均碳含量的万分之几表示，如40Cr、25Cr2MoVA合金管②钢中主要合金元素，除个别微合金元素外，一般以百分之几表示。当平均合金含量＜1.5%时，钢号中一般只标出元素符号，而不标明含量，但在特殊情况下易致混淆者，在元素符号后亦可标以数字"1"，例如钢号"12CrMoV"和"12Cr1MoV"，前者铬含量为0.4-0.6%，后者为0.9-1.2%，其余成分全部相同。当合金元素平均含量≥1.5%、≥2.5%、≥3.5%……时，在元素符号后面应标明含量，可相应表示为2、3、4……等。例如18Cr2Ni4WA。③钢中的钒V、钛Ti、铝AL、硼B、稀土RE等合金元素，均属微合金元素，虽然含量很低，仍应在钢号中标出。例如20MnVB钢中。钒为0.07-0.12%，硼为0.001-0.005%。④高级优质钢应在钢号最后加"A"，以区别于一般优质钢。⑤专门用途的合金结构钢，钢号冠以（或后缀）代表该钢种用途的符号。例如铆螺专用的30CrMnSi钢，钢号表示为ML30CrMnSi。
热处理规范
播报编辑临界点温度Ac1=770°C、Ac3=872°C、Ar3=708°C普通球化退火退火温度780~810°C,以25°C/'h的冷却速度随炉缓慢降至≤650°C,出炉空冷。该工艺热处理时间长达20h以上,且退火后碳化物的颗粒不均匀,会影响后续的冷加工及最终的淬、回火组织和性能。等温球化退火退火温度780~810°C,快冷至690~720°C,进行等温,再出炉空冷。该工艺节省热处理时间(整个工艺过程需时间12~18h),处理后的组织中碳化物细小均匀。重复球化退火第一次加热到810°C后冷却至650°C,再加热到790°C后冷却到≤650°C,出炉空冷。该工艺虽可节省一定的时间,但工艺操作过程比较繁琐。淬、回火处理淬火温度830~860°C,油冷,回火温度170 ~190°C。冷处理温度-50~ -78°C。 [2]
典型应用举例
播报编辑（1）可用作成形滚轮。（2）也可用于制作尺寸较大、形状较复杂和精度较高的塑料模。新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2025 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备11000002000001号window.PAGE_DATA= 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